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http://dx.doi.org/10.17555/ksvc.2015.02.32.1.41

Outbreaks of Strangles due to Capnophilic Streptococcus equi subsp equi in South Korea  

Moon, Ja-Ho (Equine Hospital, Korea Racing Authority)
Kim, Jeong-Hee (College of Veterinary Medicine and Veterinary Research Institute, Jeju National University)
Takai, Shinji (Department of Animal Hygiene, School of Veterinary Medicine, Kitasato University)
Son, Won-Geun (College of Veterinary Medicine and Veterinary Research Institute, Jeju National University)
Publication Information
Journal of Veterinary Clinics / v.32, no.1, 2015 , pp. 41-44 More about this Journal
Abstract
We reported an outbreak of clinical strangles in thoroughbred horses due to capnophilic Streptococcus equi subsp equi in South Korea. On three different farms, we isolated 17 S equi subsp equi isolates from 29 horses with or without abscesses in their lymph nodes. Of the 17 isolates, two isolates from clinical cases grew well in aerobic conditions, whereas 7/7 isolates from clinical cases and 8/22 isolates from the nasal discharges of horses did not. The latter 15 isolates were capnophilic, oxygen-sensitive, and $CO_2$-requiring S equi subsp equi, which could not grow in aerobic conditions, but which grew well in a $CO_2$ incubator with 5% $CO_2$, in anaerobic conditions using a GasPak, and with reduced oxygen tension in a candle jar. This study is the first report of a strangles outbreak caused by capnophilic S equi subsp equi in South Korea.
Keywords
Capnophilic; Strangles; Streptococcus equi subsp equi;
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